Rhizoma Arisaematis Preparatum. Part used: Rhizome. Known as Prepared Arisaema Rhizome. Entering meridians: Liver, Lung and Spleen. Tian Nan Xing dries dampness, expels phlegm, disperses wind-phlegm in the channels, stops spasms, reduces swelling and alleviates pain. All Phoenix Medical dry authentic herbs and concentrated herbal granules are free of sulphur, herbicides and pesticides.